Preliminary analysis of reproductive parameters of the boutu, inia geoffrensis, and the tucuxi, sotalia fluviatilis, in the amazon river system. Abundance estimate of the amazon river dolphin inia geoffrensis and. The genus inia is currently considered monospecific, with three recognized subspecies. The pink river dolphin is the largest cetacean to spend its time in fresh waters. Amazon dolphin inia geoffrensis longevity, ageing, and life. Ini nga species ginbahin ha masunod nga subspecies.
Acoustic characteristics of biosonar sounds of free ranging botos inia geoffrensis and tucuxis sotalia fluviatilis in the negro river, amazon, brazil. Amazonasflussdelfin inia geoffrensis wwf deutschland. The amazon river dolphin inia geoffrensis, also known as the boto, bufeo or pink river. Jan 24, 2014 scientists from brazil and the united kingdom have described a new species of true river dolphin from the araguaia river basin, the first such discovery in nearly 100 years. Posterior respiratory apparatus of inia geoffrensis and sotalia fluviatilis. Pdf acoustic characteristics of biosonar sounds of free. Reproductive parameters of the amazon river dolphin, or boto inia geoffrensis, were estimated from a population of individually recognizable animals in the brazilian amazon throughout 24 years. Use of boto inia geoffrensis as baite in fisheries in the central amazon vera m. Sexual dimorphism and body scarring in the boto amazon river dolphin inia geoffrensis pdf. Oxford university press is a department of the university of oxford.
Males were on average 16% longer and weighed 55% more than females, demonstrating that this species is one of the most sexually dimorphic of all cetaceans for size. Morphology of the pectoral girdle in the amazon dolphin inia. Amazon river dolphins inia geoffrensis use a highfrequency. Morphology of the pectoral girdle in the amazon dolphin inia geoffrensis with special reference to the shoulder joint and the movements. Files are available under licenses specified on their description page. Feb 05, 2020 plural of inionzoology a south american freshwater dolphin inia boliviensis with a hairy snout.
However, it is not a legal authority for statutory or regulatory purposes. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Most of the scientific community accepted this single species classification, as does the iucn. Mammal species of the world a taxonomic and geographic reference. Inia geoffrensis humboldtiana are located in the orinoco river basin, including the apure and meta rivers. Reproductive parameters of the amazon river dolphin or.
Serum samples from 95 free living amazon river dolphins inia geoffrensis from the mamiraua sustainable development reserve rdsm, tefe, amazonas, central amazon, brazil were tested for t. Biology and conservation of freshwater cetaceans in asia. The boto is a mammal included in the cetacea order, odontoceti suborder and iniidae family. Inia species inia geoffrensis common name amazon dolphin synonyms delphinus frontatus, delphinus geoffrensis lifespan, ageing, and relevant traits maximum longevity 31. In 1996 the iucn red list of threatened species listed the pink dolphin as vulnerable. Attitudes and behaviors toward amazon river dolphins inia geoffrensis in a sustainable use protected area. Observations on the bolivian inia boliviensis dorbigny, 1834 and the amazonian bufeo inia geoffrensis blainville, 1817 with description of a new subspecies inia geoffrensis humboldtiana. You are about to meet a sea creature who is seat to become a handsome man who seduces the young ladies. Although some aspects of amazon river dolphin biology are well known, there is a lack of even basic information about reproductive anatomy. Posterior respiratory apparatus of inia geoffrensis and. The organism appears to be immunologically distinct from members of the recognized lancefield groups of streptococci. Boto, pink river dolphin the boto is a mammal included in the cetacea order, odontoceti suborder and iniidae family. Seroprevalence of toxoplasma gondii in freeliving amazon. Morphology of the pectoral girdle in the amazon dolphin.
Inia synonyms, inia pronunciation, inia translation, english dictionary definition of inia. Pdf we present results of the first simultaneous visual and acoustic surveys for amazon river dolphins inia geoffrensis and tucuxi. Genetic diferentiation sic in populations of the river dolphins genus inia blainville, 1817 and apports to the taxonomic status with molecular analysis. This book is shared online by free kids books at in terms of the creative commons license provided by the publisher or author. Scientists from brazil and the united kingdom have described a new species of true river dolphin from the araguaia river basin, the first such discovery in nearly 100 years.
It is ten or twelve feet long, and has a hairy snout. The acoustic characteristics of the echolocation clicks of free ranging botos and tucuxis were measured with a hydrophone array consisting of a fullband and an acoustic event recorder atag. This page was last edited on 16 december 2019, at 10. Placentation in dolphins from the amazon river basin. Amazon river dolphin inia geoffrensis facts about animals. Amazon river dolphins inia geoffrensis modify biosonar. Males were also pinker than females, more heavily scarred. Comparison with those of other platanistids fusao yamasaki and toshiro kamiya department of biology, sapporo medical college, sapporo anatomical laboratory, college ef medical technology, universiry of tsukuba, jbaraki abstract. You are about to meet a sea creature who is seat to become a handsome man who seduces the young ladies, or a beautiful young woman who leads young men into the w. Pdf abundance estimate of the amazon river dolphin inia. This chapter explores the amazon river dolphin commonly known as boto. Whistles were recorded and analyzed from free ranging single or mixed species groups of boto and tucuxi in the peruvian amazon, with sonograms presented.
A zero annual export quota has been established for live specimens from the black sea population of tursiops truncatus removed from the wild and traded for primarily comme. The amazon river dolphin is distributed throughout the amazon and orinoco rivers and their tributaries. All structured data from the file and property namespaces is available under the creative commons cc0 license. Michael ladegaard, frants havmand jensen, kristian beedholm, vera maria ferreira da silva, peter teglberg madsen. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. A 1998 classification listed a single species, inia geoffrensis, in the genus inia, with three recognized subspecies. Whistles of boto, inia geoffrensis, and tucuxi, sotalia. Inia geoffrensis boliviensis dorbigny, 1834 bolivian river dolphin, bolivian bufeo subspecies inia geoffrensis geoffrensis blainville, 1817 amazon river dolphin, common boto. Vera mf da silva, 1 anthony m carter, 2 carlos e ambrosio, 3 ana f carvalho. It is confined to the mamore river and its main tributary, the itenez. The amazon river dolphins inia geoffrensis, also known as botos, are solitary animals and are rarely seen in groups of more than four individuals. The boto is the largest of the river dolphins with a maximum recorded body length of 255 cm and body mass of 207 kg for males and.
It furthers the universitys objective of excellence in research, scholarship, and education by publishing worldwide. A large dolphin, inia geoffrensis, of the amazon river. The amazon river dolphin inia geoffrensis, cetacea. Largely forested with numerous channels and lakes, mamiraua comprises a variety of seasonal floodplain habitats known collectively as varzea. With the help of over 7,000 of the worlds best wildlife filmmakers and photographers, conservationists and scientists, featured multimedia factfiles for more than 16,000 endangered species. Features shared by inia and sotalia include a reproductive cycle. Amazon river dolphins inia geoffrensis modify biosonar output level and directivity during prey interception in the wild. Amazon dolphin inia geoffrensis longevity, ageing, and. Di are lacking from the published literature on freeranging animals. This compilation brings together current information on the status of asian freshwater cetacean populations, the factors that have caused their recent declines, and what can be done to. Iniidae is a freshwater dolphin endemic to south america and widely distributed in the rivers of the amazon and orinoco basins best and da silva, 1993. The annual cycle of flooding in this region amplitude 1115 m dominates all life. This compilation brings together current information on the status of.
Habitat use by the boto, or amazon river dolphin inia geoffrensis, was investigated in and around the mamiraua reserve, brazil. Some keepers say these groups are familial, even reporting individuals being born into the group. Use of boto inia geoffrensis as baite in fisheries in the. Included in appendix ii, except for the species included in appendix i. Toxoplasma gondii is an important pathogen in aquatic mammals and its presence in these animals may indicate the water contamination of aquatic environment by oocysts. Amazon river dolphins inia geoffrensis use a highfrequency shortrange biosonar. Ginklasipika han iucn an species komo kulang hin datos subspecies. A major threat to river dolphins in brazil is habitat loss and fragmentation as a result of the construction of hydroelectric dams. In the amazon basin, two odontoceti species, boto amazon river dolphin, inia geoffrensis and tucuxi sotalia fluviatilis, live sympatrically.
Inia geoffrensis boliviensis has populations in the upper reaches of the madeira river, upstream of the rapids of teotonio, in bolivia. Evidence is presented for the recognition of a new species of streptococcus isolated from abscess foci in an amazon freshwater dolphin, inia geoffrensis. This page was last edited on 8 december 2014, at 06. This book is shared online by free kids books at in terms of the.
An inia geoffrensis in nahilalakip ha genus nga inia, ngan familia nga iniidae. The amazon river dolphin inia geoffrensis, also known as the boto, bufeo or pink river dolphin. However, behavioral studies have shown that botos are solitary, only forming groups at feeding areas and during the mating season. Wildscreens arkive project was launched in 2003 and grew to become the worlds biggest encyclopaedia of life on earth. Retrospective pathological survey of pulmonary disease in. The amazon river dolphin inia geoffrensis, also known as the boto, bufeo or pink river dolphin, is a species of toothed whale classified in the family iniidae. The negro river currently has seven floating houses where tourists can feed and interact with botos, each with its own history of how these aggregations were formed.
Pdf attitudes and behaviors toward amazon river dolphins. The amazon river basin is unusual in harbouring two sympatric species of cetacean, the small gray dolphin or tucuxi sotalia fluviatilis and the pink dolphin or boto inia geoffrensis. Inia geoffrensis wikispecies, free species directory. Pdf on jan 1, 2015, jaime bolanosjimenez and others published tonina del orinoco, inia geoffrensis find, read and cite all the research you need on. Acoustic characteristics of biosonar sounds of free. Pathological survey of pulmonary disease in free ranging amazon river dolphin and tucuxi. Use of boto inia geoffrensis as baite in fisheries in. Orinoco river dolphin the orinoco subspecies, inia geoffrensis humboldtiana. The boto is a bulky mammal but with a body with a very hydrodynamic structure. Analysis revealed whistles recorded falling into two discrete groups.
Inia geoffrensis geoffrensis amazo nasbecken, inia geoffrensis humboldtiana ori noco becken. Comparison with those of other platanistids fusao yamasaki and toshiro kamiya department of biology, sapporo medical college, sapporo anatomical laboratory, college ef medical technology, universiry of tsukuba, jbaraki abstract the stomach of the bou tu, inia geoffrensis, was examined macro. Inia geoffrensis mammalian species oxford academic. Antigens prepared by five different extraction procedures do not react with antisera to streptococcus groups a to u, whereas. Pdf tonina del orinoco, inia geoffrensis researchgate. Reproductive parameters of the amazon river dolphin or boto. Morphology and ultrastructure of the amazon river dolphin.
We examine the degree of overlap between the distributions of two river dolphin species boto inia geoffrensis and tucuxi sotalia fluviatilis and hydroelectric projects and provide an initial quantification of impacts. Pdf density, abundance and group size of river dolphins. Aug 20, 2017 baby the amazon river dolphin or pink river dolphin, the last individual of its species and its whole family, iniidae in captivity outside its native range, at duisburg zoo germany. Baby the amazon river dolphin or pink river dolphin, the last individual of its species and its whole family, iniidae in captivity outside its native range, at duisburg zoo germany. Amazon river dolphins inia geoffrensis journal of experimental.
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